Acoustic Noise Management via Real-Time Feedback Control

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Solution Overview

Problem

Electronic devices face challenges in managing acoustic noise, as existing thermal-centric design approaches often require sacrificing performance to maintain thermal and acoustic margins, leading to inefficient indirect control of acoustic noise and limited real-time monitoring of acoustic performance.

Innovation Solution

A system that estimates and manages acoustic noise by identifying noise-producing components, using acoustic transfer functions, and dynamically adjusting device settings based on ambient noise and user preferences, integrating with thermal control to ensure noise remains within specified limits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If thermal-centric design approaches are used to manage acoustic noise, then acoustic noise is reduced, but device performance deteriorates

Engineering Contradiction:
Improveacoustic noiseVSAvoiddevice performance
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The system implements real-time acoustic noise monitoring with feedback control, continuously measuring acoustic output and dynamically adjusting device settings to maintain noise within specifications while preserving performance. This closed-loop approach replaces static thermal-centric designs with adaptive control that responds to actual acoustic conditions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent transitions from static thermal management to dynamic acoustic control, where device settings are continuously adjusted based on real-time acoustic measurements. This enables the system to adapt performance parameters dynamically, maintaining both noise compliance and optimal performance under varying operating conditions.

Inventive Principle:
Principle #15Dynamics

2Object-generated harmful factors

If indirect control methods are used to manage acoustic noise, then acoustic noise is reduced, but control precision deteriorates

Engineering Contradiction:
Improveacoustic noiseVSAvoidacoustic noise control precision
Core Design Contradiction:
Object-generated harmful factorsVSMeasurement precision

Solution Approach 1:

The system employs direct acoustic feedback control, measuring actual acoustic output and using this information to precisely adjust device settings. This direct feedback loop enables accurate control of acoustic noise, overcoming the imprecision of indirect thermal-based control methods.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces indirect thermal control mechanisms with direct acoustic measurement and control systems. By substituting acoustic sensors and control algorithms for thermal-based indirect control, the system achieves precise direct control over acoustic noise output.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Object-generated harmful factors

If real-time acoustic monitoring is implemented, then acoustic noise management is improved, but device complexity increases

Engineering Contradiction:
Improveacoustic noiseVSAvoidsystem complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The system integrates acoustic monitoring and control functions into existing device management infrastructure, allowing the same control mechanisms to serve both acoustic noise management and performance optimization. This multi-functionality approach minimizes additional complexity while achieving real-time acoustic control.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines acoustic monitoring, measurement, and control functions into a unified management system that works alongside existing device control mechanisms. By merging these functions rather than adding separate independent systems, the overall device complexity is minimized while achieving comprehensive acoustic noise management.

Inventive Principle:
Principle #5Merging (Combining)

4Productivity

If higher-performance components are used, then device performance is improved, but acoustic noise increases

Engineering Contradiction:
Improvedevice performanceVSAvoidacoustic noise
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The system enables dynamic adjustment of high-performance components to operate at optimal noise levels. By continuously monitoring acoustic output and adapting component operation in real-time, the system maintains high performance while preventing excessive noise generation, allowing the use of higher-performance components without permanent noise penalties.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent utilizes parameter changes in component operation to balance performance and noise. By dynamically adjusting operational parameters such as power consumption, speed, or load based on acoustic feedback, the system allows high-performance components to operate efficiently while maintaining acoustic noise within acceptable limits.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9552804B2Managing acoustic noise produced by a device
Publication Date: 2017.01.24 APPLE INC
  • US9552804B2 patent drawing
  • US9552804B2 patent drawing
  • US9552804B2 patent drawing

AI summary

One embodiment of the present invention provides a system that manages the acoustic noise produced by a device. During operation, the system receives a set of acoustic characteristics for the device. The system then uses these acoustic characteristics to estimate the acoustic noise being generated by the device. Next, the system uses the estimated acoustic noise to adjust a setting in the device to manage the acoustic noise produced by the device.